Because the Wii U shouldn't have had Assassin's Creed 3 and Black Ops 2 at launch and nobody wants to see Wii U versions of Watch Dogs and GTA when they launch. It's a Nintendo platform so there is no need for cross-platform games it should be exclusives only. Nobody has ever got a Nintendo console for games like Street Fighter, Monster Hunter, Final Fantasy, Resident Evil or Metal Gear... that'd just be ridiculous...